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English definition of “superconductor”

superconductor

noun [C] uk   /ˈsuː.pə.kənˌdʌk.tər/ us    /-pɚ.kənˌdʌk.tɚ/
a substance, especially a metal, that allows an electrical current to move freely through it at a very low temperature
superconductivity
noun [U] uk   /ˌsuː.pə.kɒn.dʌkˈtɪv.ɪ.ti/ us    /-pɚ.kɑːn.dʌkˈtɪv.ə.t̬i/
(Definition of superconductor from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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